HI1051 Hyundai Reference
Subject: Transaxle solenoid valve connector identification and specifications for
electronically controlled transaxles
Source: Hyundai service manuals and technicians, Automotive Transmissions
Rebuilders Association
This reference contains information on the following transaxles:
• “KM175, KM176, KM177; F4A21, F4A22, F4A23, F4A33; A4AF1, A4AF2, and A4BF1”
• “A4AF3 and A4BF2”
• “F4A42, F4A51, and F5A51”
• “F21”
• “TB-60N, TB-65N”
• “6HP26”
• “A5HFI”
• “A6MFI”
KM175, KM176, KM177;
F4A21, F4A22, F4A23, F4A33;
A4AF1, A4AF2, and A4BF1
Figure HI1051-1 shows solenoid location, Table HI1051-1 shows shift solenoid operating
state, Figure HI1051-2 gives connector pin identification, and Table HI1051-2 shows
connector specifications.
Figure HI1051-1
Table HI1051-1 Solenoid specifications
POSITION SHIFT SOLENOID A SHIFT SOLENOID B
1st Gear ON ON
2nd Gear OFF ON
3rd Gear OFF OFF
4th Gear ON OFF
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Figure HI1051-2
Table HI1051-2 Connector specifications
PRESSURE DAMPER CLUTCH SHIFT CONTROL SOLENOID VALVE
ITEM CONTROL CONTROL
SOLENOID VALVE SOLENOID VALVE A B
Terminal Number 1 2 3 4
Resistance value (ohms)
2.9 2.9 22.3
at 68°F (20°C)
Operating Voltage 12 12 12
Operation Duty Duty ON-OFF
A4AF3 and A4BF2
Figure HI1051-3 shows solenoid identification, Table HI1051-3 shows shift solenoid
operating state, Figure HI1051-4 shows solenoid location, Figure HI1051-5 identifies
connector pins, and Table HI1051-4 shows connector specifications.
Figure HI1051-3 Solenoid identification
Table HI1051-3 Shift control solenoid application chart
GEAR POSITION* A B C
1st ON ON OFF
2nd OFF ON ON
3rd OFF OFF ON
4th ON OFF ON
* PRNDL position in “D” and OD switch ON.
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Table HI1051-4 Connector specifications
PRESSURE CONTROL DAMPER CLUTCH SHIFT CONTROL SOLENOID
ITEM SOLENOID VALVE CONTROL SOLENOID VALVE
A B VALVE A B C
Terminal Number 2 1 4 5 6 3
Resistance value (ohms)
2.9 2.9 22.3
at 68°F (20°C)
Operating Voltage 12 12 12
Operation Duty Duty ON-OFF
Figure HI1051-4 Solenoid location Figure HI1051-5 Connector pinout
F4A42, F4A51, and F5A51
Figure HI1051-6 shows solenoid connector pin identification and Figure HI1051-7 shows
solenoid location. Table HI1051-5 shows solenoid resistance specifications and
Table HI1051-6 shows TFT sensor specifications.
Figure HI1051-6 Connector pinout
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Figure HI1051-7 Solenoid location
Table HI1051-5 Solenoid Resistance Checks
Terminals Name Resistance
6 and 10 Low-reverse Solenoid
3 and 9 Underdrive Solenoid
4 and 9 Second Solenoid 2.7 to 3.4 ohms
5 and 9 Overdrive Solenoid at 68°F (20°C)
7 and 10 Converter Clutch Solenoid
8 and 10 Reduction Solenoid (F5A51)
Table HI1051-6 Transmission Fluid Temperature (TFT) Sensor Resistance
Terminal ATF Temperature Resistance (kohm)
32°F (0°C) 16.7 to 20.5
68°F (20°C) 7.3 to 8.9
104°F (40°C) 3.4 to 4.2
1 and 2
140°F (60°C) 1.9 to 2.2
176°F (80°C) 1.0 to 1.2
212°F (100°C) 0.57 to 0.69
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F21
The F21 transmission is used on Varacruz models, solenoid locations are shown in
Figure HI1051-8.
Shift Solenoid C2 Shift Solenoid C1
Shift Solenoid B1 Shift Solenoid C3
Figure HI1051-8 Solenoid location
TB-60N, TB-65N
Solenoid locations are shown in Figure HI1051-9.
Shift Solenoid 1 Shift Solenoid SR
Shift Solenoid 4 Clutch Control Solenoid SL1
Shift Solenoid 2 Line Pressure Control Solenoid
Shift Solenoid 3 TFT Sensor
Lockup Control Solenoid Clutch Control Solenoid SL2
Figure HI1051-9 Solenoid location
6HP26
The 6HP26 transmission is used on Equus, Genesis, Santa Fe, and Tucson models.
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Figure HI1051-10 Equus and Genesis valve body component locations
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Figure HI1051-11 Equus and Genesis connectors
Pin Description Pin Description
1 Not used 10 Solenoid power 1
2 EC-VFS 11 26-VFS
3 Output speed supply 12 Shift solenoid B
4 Output speed signal 13 Oil temperature sensor (+)
5 Solenoid power 2 14 Input speed supply
6 35R-VFS 15 Not used
7 OD-VFS 16 OD-VFS
8 Input speed signal 17 LP-VFS
9 Oil temperature sensor (–) 18 Shift solenoid A
Figure HI1051-12 Sante Fe and Tucson connectors
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A5HFI
The A5HFI transmission is used on Enoutrage models.
The A5HFI uses a variable forced solenoid (VFS) that operates on a high-frequency (600Hz)
duty cycle to precisely control the opening of a spool valve. The VFS controls the amount of
oil flow by regulating how far the spool valve moves to open the passage. The transmission
control module (TCM) monitors the feedback signal of the VFS, and sets a diagnostic trouble
code (DTC) if the signal is out of range. On an oscilloscope a good VFS produces a square
waveform patern with variable frequency.
1 2 3 4 5 6 7
1— OD solenoid
2— L&R solenoid
3— 5A/T solenoid
4— VFS
5— UD solenoid
6— 2ND solenoid
7— DCCSV solenoid
Figure HI1051-13 A5HFI valve body
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Figure HI1051-14 A5HFI circuit diagram
Figure HI1051-15 A5HFI connector diagrams
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A6MFI
The A5HFI transmission is used on Sante Fe and Tucson models
Figure HI1051-16 A6MFI valve body
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